Anyone have an Airport Express they use to listen to iTunes wirelessly on their stereo? I've been thinking about getting one recently. I don't listen to much music on the home stereo, but when I do I usually plug in my iPod with a simple 1/8"-to-RCA stereo. Having done that a few times, I'm thinking having an AE to talk directly to my my MacBook Pro (or my wife's Mac G5) would be easier. But I don't know much about how the system works and if it's really worthwhile. Comments?